<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>File Upload</title>
</head>
<body>
<h1>Upload a file</h1>
<form method="post" enctype="multipart/form-data" action="/api/upload">
    <input type="file" name="file" required>
    <button type="submit">Upload</button>
</form>
</body>
</html>
